The Ares V was planned to be able to carry about 188 tonnes (414,000 lb) to Low Earth orbit (LEO), and 71 tonnes (157,000 lb) to the Moon.[3] Upon completion the Ares V was planned to be the most powerful rocket ever built, lifting more into orbit than even the Saturn V.[4] Ares V, Ares IV, and Ares I are named after Ares, the Greek god, which is the equivalent to the Roman god Mars.